Science

Wednesday, 29 April 2026
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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NASA
Apollo 13 launched on April 11th, 1970, and was forced to cancel the landing on the lunar surface (precisely on the Fra Mauro site), because of the explosion of an oxygen tank.
Fortunately, the lunar module served as a lifeboat and returned the crew safely back to Earth.
Brain
Docosahexaenoic acid (DHA) plays a key role in the proper functioning of the brain.
It is an organic chemical compound from the group of omega-3 fatty acids, therefore the consumption of polyunsaturated fatty acids is extremely important.
Ganymede
The moon's mantle is surrounded by layers of ice and salty liquid water.
These layers alternate. The surface of the moon consists of hard ice several kilometers thick.
Earth
The Earth has the only natural satellite - the Moon.
The moon is relatively large for a natural satellite. Its diameter is approximately ¼ the diameter of the Earth. It orbits the Earth at an average distance of 384.400 km.
Cosmos
The final stage – the death of the cosmos as we know it.
There will eventually come a point in the history of the universe when new stars will stop forming. ...
Silver
Attempts are being made to create a silver membrane that would separate oxygen from air, taking advantage of the fact that oxygen is easily absorbed by silver.
Cosmos
After the first period of rapid expansion, the universe began to cool.
As the temperature dropped, subatomic particles and then atoms separated. The universe was filled wi ...
Graphene
In diamond, each of carbon’s four valence electrons is involved in the formation of such bonds.
As a result, diamond is a transparent, non-reactive insulator, and graphite is a black conductor, susceptible to chemical modifications.
Nicotine
Nicotine is well absorbed through the skin.
This fact is used in the fight against smoking addiction by using patches soaked in it. There are ca ...
Graphene
Graphene has the potential to replace silicon in many applications.
Graphene can be used to create microprocessors a thousand times more efficient than those we know to ...